Abstract: Beijing-Zhangjiakou high-speed railway is an important transportation infrastructure to support the successful holding of the 2022 Beijing Winter Olympic Games and Winter Paralympic Games (hereinafter referred to as the Olympic Winter Games). During the Olympic Winter Games, it will face major challenges such as diverse passenger demand, complex line conditions and high security requirements. Therefore, this paper systematically analyzed the general demand of Beijing-Zhangjiakou high-speed railway intelligent service from three aspects of service, safety and cultural display. On this basis, the paper designed the overall framework of intelligent service for Beijing-Zhangjiakou high-speed railway for the Olympic Winter Games travel, put forward key scientific problems and 6 key technologies to be solved, and proposed the typical application demonstration to be carried out during the Olympic Winter Games, such as international ticketing service, intelligent station-train service, intelligent EMU, security big data application, virtual interactive guidance and integrated display service of underground station and tunnel, visual display of Beijing-Zhangjiakou high-speed railway culture, etc. The series of achievements of the project will provide technical impetus for the new round of high-speed railway industry growth in China, at the same time, drive the technological and economic development in relevant fields, and further improve the brand status of China's high-speed railway in the world, help the implementation of Belt and Road initiative.